Height adjustable mechanic&#39;s chair



FIG. 1 is a top, right side, front perspective view of a height adjustable mechanic's chair showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof, the right side elevational view being a mirror image of FIG. 4;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken line portions of the height adjustable mechanic's chair are for illustration purposes only and form no part of the claimed design. 

The ornamental design for a height adjustable mechanic's chair, as shown and described. 